Administrator Guide
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.12.0 Introduced on the S4810.
Related
Commands
• fefd — enables far-end failure detection on an interface.
• fefd reset — enables FEFD globally on the system.
fefd
Enable Far-End Failure Detection on an interface, set the FEFD interval, or select the FEFD mode.
C9000 Series
Syntax
fefd {disable|interval|mode {aggressive|normal}
Parameters
disable Enter the keyword disable to disable FEFD for the specified interface.
interval Enter the keyword interval, followed by a value to specify the FEFD interval in seconds.
Range is from 3 to 300. Default is 15.
mode Enter the keyword mode followed by the mode type to specify the FEFD mode.
• normal: Change the link state to “unknown” when a far-end failure is detected by the
software on that interface. When the interface is placed in an “unknown” state, the
software brings down the line protocol.
• aggressive: Change the link state to “error-disabled” when a far-end failure is
detected by the software on that interface. When an interface is placed in an “error-
disabled” state, you must enter the fefd reset command to reset the interface
state. Range is normal or aggressive. Default is normal.
Defaults Disabled.
Command Modes INTERFACE
Command History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.12.0 Introduced on the S4810.
Usage Information When you enter no fefd for an interface and fefd-global, FEFD is enabled on the interface because the
no fefd command is not retained in the configuration file. To keep the interface FEFD disabled when the global
configuration changes, use the fefd reset command.
Related
Commands
• fefd disable — disables far-end failure detection on an interface.
• fefd reset — enables FEFD globally on the system.
• fefd mode — changes FEFD mode on an interface.
992 Layer 2